Hi,
you can file for annulment of your marriage under the following sections and the subsections depoedning on the fact of your case
Section 25 in The Special Marriage Act, 1954
25. Voidable marriages.—Any marriage solemnized under this Act shall be voidable and may be annulled by a decree of nullity if,—
(i) the marriage has not been consummated owing to the wilful refusal of the respondent to consummate the marriage; or
(ii) the respondent was at the time of the marriage pregnant by some person other than the petitioner; or
(iii) the consent of either party to the marriage was obtained by coercion or fraud, as defined in the Indian Contract Act, 1872 (9 of 1872): Provided that, in the case specified in clause (ii), the court shall not grant a decree unless it is satisfied,—
(a) that the petitioner was at the time of the marriage ignorant of the facts alleged;
(b) that proceedings were instituted within a year from the date of the marriage; and
(c) that marital intercourse with the consent of the petitioner has not taken place since the discovery by the petitioner of the existence of the grounds for a decree: Provided further that in the case specified in clause (iii), the court shall not grant a decree if,—
(a) proceedings have not been instituted within one year after the coercion had ceased or, as the case may be, the fraud had been discovered; or
(b) the petitioner has with his or her free consent lived with the other party to the marriage as husband and wife after the coercion had ceased or, as the case may be, the fraud had been discovered.
now section 31. says where one has to file the petition Court to which petition should be made. -
(1) Every petition under Chapter V or Chapter VI shall be presented to the district court within the local limits of whose original civil jurisdiction-
(i) The marriage was solemnized; or
(ii) The respondent, at the time of the presentation of the petition resides; or
(iii) The parties to the marriage last resided together; or
(iv) The petitioner is residing at the time of the presentation of the petition, in a case where the respondent is at that time residing outside the territories to which this Act extends, or has not been heard of as being alive for a period of seven years by those who would naturally have heard to him if he were alive.]